Oar sleeve and collar



\ Apr. 3, 1923.

- W. E. WINTEMUTE OAR SLEEVE AND COLLAR Filed Dec. 15, 1922 mufe.

Patented Apr. 3, 1923.

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OAR SLEEVE AND COLLAR.

Application filed December 15, 1922. Serial No. 607,180.

To all whom it may concern:

Be it known that I, Wrnnson NINTE- MUTE, citizen of the Dominion of Canada, residing at Vancouver, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Oar Sleeves and Collars, of which the following is a specification.

This invention relates to an oar sleeve and collar such as is used for receiving the wear of an oar in its rowlock, and for retaining the oar against endwise movement therein. These rowlock sleeves are usually made of leather and nailed to the wood of the oar, and a multiple strip of the same material is wound round one end of the sleeve to form the retaining collar.

This leather sleeve being secured with nails to the shaft of the car, the wood of the car is thereby weakened where there is the greatest requirement for strength, viz, adjacent the rowlock.

Furthermore, leather is not a suitable material as it softens and stretches when exposed to wet.

In the invention, which is the subject of this application, the rowlock sleeve and its collar are of vulcanized rubber moulded in one piece without split or joint, and the same may be moulded on the shaft of the oar and vulcanized in position, but preferably is moulded and vulcanizedbefore it is applied to the car and is of such inside dimension that it must be expanded before being placed in position on the oar, so as to exercise a strong tensional grip that will retain the sleeve against endwise movement on the car.

The invention is fully described in the following specification, reference being made to the drawings by which it is accompanied, in which:

Fig. 1 illustrates an oar with the rowlock sleeve in position.

Fig. 2 is a longitudinal section of the sleeve showing the preferred manner of its application to the oar shaft.

In these drawings 2 represents the shaft of an oar, to which the sleeve 3 with its collar 4, which is the particular subject of this application, is applied. This sleeve 3 with its collar 4: is moulded of vulcanized rubber in one piece. The inner diameter 5 of the sleeve is slightly smaller than that 6 of the oar shaft where the sleeve is to be located, the difference of diameter being such as to enable the sleeve 3 to have a substantion 10 may be tial grip on the shaft 2 of the oar when in place thereon.

This sleeve may, as stated previously, be moulded and vulcanized in its desired position on the oar shaft, but preferably the sleeve and its collar will be vulcanized before be1ng passed on to the oar, in which case it will require to be forcibly expanded to enable it to be passed to its position, and thereafter the expanding means will be withdrawn, allowing the sleeve to strongly grip the oar by its elasticity.

This expansion of the sleeve is effected by passing 1nto it a sleeve 8 of thin sheet metal the inner diameter 9 of which is such that thesleeve 8, with the expanded oar sleeve 3 on 1t, may be freely passed on the oar shaft.

The sleeve 8 is passed into the oar sleeve 3 by a conically tapered portion 10, which is removably socketed into one end of the sleeve 8, the socket having a shoulder to bring the outer surface of 10 to coincide withthat of the expanding sleeve 8. The

of the conical tapered porslightly larger than that of the metal sleeve 8 and a suitable lubricant may be used to facilitate entrance, which lubricant will preferably be such as will dry and set hard, to cement the sleeve 3 to the wood of the oar shaft 2.

When the oar sleeve 3 is expanded on the metal sleeve 8, as represented by the dot and dash lines in Fig. 2, the sleeve 8 with the oar sleeve 3 on it is passed on the oar shaft 2 to its desired position and, while the car sleeve 3 is retained at the desired position, the metal sleeve 8 is withdrawn when the car sleeve 3 will tend to shrink to its normal dimension and will thus exert its elastic tension to securely hold it on the shaft.

Although reference is made to the use of a lubricant to facilitate expansion of the car sleeve 3 and withdrawal of the expansion sleeve 8 and the use of such lubricant as a cementing means, it is expected that the frictional grip of the relatively smaller elastic sleeve 3 on the larger oar shaft will be sufficient to retain the oar sleeve in position.

A. substantial fillet may, as shown in the drawing at 7, be formed at the junction of the collar to the oar sleeve 3.

So constructed and applied the sleeve has a very secure hold on the car and strengthens rather than weakens it, as when the leather sleeve is nailed on. Further, the hard vulcanized rubber is water-resisting and does larger diameter not soften or Water-soak as does leather, and in the Wear to Which it is exposed is much more durable.

Having now particularly described my invention, I hereby declare that What I claim as new and desire to be protected in by Letters Patent, is:

1. A rowlock bearing sleeve and collar for an oar, said sleeve being of elastic material such as vulcanized rubber and moulded in one piece Without joint or split, the inner dimension of the sleeve being less than that of the oar at its designed position thereon.

2. A rowlock bearing sleeve and collar for an oar, said sleeve being of elastic material such as vulcanized rubber and moulded in one piece Without joint or split, and means for securing the same to the oar shaft by constricting pressure.

3. A rowlock bearing sleeve and collar for an oar, said sleeve being of elastic material such as vulcanized rubber and moulded in one piece Without joint or split, the inner dimension of the sleeve being less than that of the oar at its designed position thereon, and means for expanding the same to pass it to its desired position on the oar shaft.

4. A rovvlock bearing sleeve and collar for an oar, said sleeve being of elastic material such as vulcanized rubber and moulded in one piece Without joint or split, the inner dimension of the sleeve being less than that of the oar at its designed position thereon that it may exert by its tension a holding grip on the oar shaft.

In testimony whereof I aflix my signature.

NILLSON E. W'INTEMUTE. 

